All Features
Everything you need to improve speed.
Platform
CrUX data
Check the Core Web Vitals assessment based on real-user data without the need to install any tracking scripts.
Teams
Divide work into projects or business areas. Share reports and collaborate on speed.
Pull Request Reviews
Forget testing in production. Know the speed impact of your work without leaving GitHub.
Test Profiles
See how different people experience your sites. Emulate connection speed, devices, test location and more.
Performance Budgets
Create trackable goals. Get notified when you meet or exceed them.
Single Page Tests
Quickly create and share one-off test results with no log-in required.
Team Insights Email Report
Share monthly speed summaries with your team. Keep everyone in the loop.
Insights Email Report
No more data crunching! Receive detailed reports of speed changes directly to your inbox.
Google Lighthouse built-in
Use the best speed auditing tools. No scripting and maintenance required.
PageSpeed mode
Tired of manual PageSpeed tests? Run Calibre with PageSpeed test settings.
Core Web Vitals support
Track modern metrics that impact your search engine ranking.
Long Task Timeline
Identify long-running tasks that block JavaScript execution.
Third Party Tracking
Quickly find how external tools and scripts affect your speed. Swap slow for fast.
Pages Leaderboard
Find best or worst performing Pages. Benchmark against your competitors.
Global testing infrastructure
Test across 17 global locations. Discover where your customers' experience needs most work.
User permissions
Control access with three different roles. Grant management or view-only privileges.
Unlimited data retention
We keep your monitoring data for the lifetime of your account.
CSV Export
Export your data in CSV. Get more visualisation options in tools you know and love.
Advanced test scheduling
Test as often as you need. Daily, hourly or at a selected interval.
Test variability prevention
Always trust your metrics. An AI-powered test verification engine re-tests results when an anomaly is detected.
Unlimited Sites and Pages
Track unlimited URLs at no extra cost, no matter your plan.
Metric charts
See historical performance data for each metric for up to 6 months.
Ad and Third Party Blocking
Block ads and third party resources to establish a performance baseline.
JavaScript timings
Find out the parse, compile and execution cost of internal and vendor scripts.
Test authenticated pages
Authenticate to protected sites with cookies, custom headers or form log-ins.
Site render timeline
Watch your sites load to see speed opportunities and bottlenecks.
Fixed IP addresses
Use fixed IP addresses to ensure requests are securely coming from Calibre.
Request log
Dig into downloaded assets and learn how to optimise their delivery.
HAR files
Download HAR files to understand connectivity and transfer issues.
Automation
Command line interface
Automate your performance system with modern, developer-first CLI tooling.
Node.js API
Install our npm package to use Calibre directly in Node.
Webhooks
Add webhooks to retrieve Snapshot data securely through HTTP.
Deploy tracking
Add markers to your charts. Correlate deployments to improvements or regressions.
Notifications
Email alerts
Get timely notifications about account activity and monitoring data. Never miss an important speed change.
Slack integration
Receive instant alerts about new Snapshots and performance budget status.
Integrations
Security and reliability
Full encryption
We encrypt all of your data at rest in both our databases and file storage.
99.91% uptime
Calibre is available when your business needs it. Always.
GDPR compliance
We comply with EU's General Data Protection Regulation (GDPR) laws.
Google Single Sign-On
Sign up and log in with your Google account on every Plan tier.
SAML Single Sign-On Company Plan
Easily onboard your team using any SAML-compatible identity provider.
One platform for all web performance needs
Check first results in just a couple minutes. Start improving performance the same day.
